CN103826777A

CN103826777A - Clamping device for wax model injection molding machine

Info

Publication number: CN103826777A
Application number: CN201180073444.2A
Authority: CN
Inventors: 安井深作
Original assignee: M Yasui and Co Ltd
Current assignee: M Yasui and Co Ltd; Yasui and Co
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2014-05-28
Anticipated expiration: 2031-09-14
Also published as: HK1198293A1; EP2756895B1; JPWO2013038448A1; JP5824058B2; WO2013038448A1; EP2756895A4; IN2014CN02689A; CN103826777B; EP2756895A1

Abstract

This clamping device for a wax model injection molding machine has: a mold stand having a flat surface for mounting a mold; a clamp head movable in the vertical direction with respect to the mold stand; a first guide means extending parallel to the direction of movement of that clamp head; and a pressing member engaged with the first guide member and movable along the first guide means. The pressing member has a second guide means extending parallel to the flat surface, and the clamp head is movable along the second guide means. Thus, a rubber mold for wax model molding can be pressed uniformly.

Description

Wax-pattern Jet forming machine grip device

Technical field

The present invention relates to grip device.In addition, particularly, relate to the wax-pattern emission forming device grip device for lost-wax casting.

Background technology

As a kind of microcast process of the complicated shapes such as metal fittings, known lost-wax process.Comprise the following stage in lost wax process: " making the rubber mold molding procedure (hereinafter referred to as the 1st operation) of rubber mold moulding "; " use rubber mold to make the shaping investment pattern operation (hereinafter referred to as the 2nd operation) of shaping investment pattern "; " use the mold production process (hereinafter referred to as the 3rd operation) of wax-pattern "; " casting process (hereinafter referred to as the 4th operation) "; And " fine finishining of carrying out the mo(u)lding obtaining by casting process obtains the rear operation (hereinafter referred to as the 5th operation) of final cast product ".By carrying out successively these the 1st operation to the 5 operations, complete final cast product.

First,, in the rubber mold molding procedure of the 1st operation, utilize silicon rubber to be produced on the rubber mold of the inside hollow pattern that to be formed with end article be same shape.Then,, in the shaping investment pattern operation of the 2nd operation, penetrate injection wax to the hollow pattern of this rubber mold and make wax-pattern.In the 3rd operation, this wax-pattern is put into mold raw material it is solidified.Then, wax-pattern is melted wax is removed with electric furnace, fire molding material and make mold.In the 4th operation, cast to this mold casting metal material.In the 5th operation, excise unwanted part from this casting piece, and the final fine finishining such as grind.

Wax-pattern emission forming device involved in the present invention is for the wax operation as the 2nd operation.Therefore, come especially to illustrate in further detail as " the rubber mold molding procedure " of the 1st operation with as " the shaping investment pattern operation " of the 2nd operation with reference to Fig. 5.Fig. 5 is the figure of the flow process of schematically illustrated especially the 1st operation and the 2nd operation.

In rubber mold molding procedure (the I portion of Fig. 5), first, designer makes the prototype model 50 of the shape of end article.Then,, to runner (sprue) 51a of prototype model 50 assembling casting use, make mold prototype model 51.Inner side at outside framework 52 packs silicon rubber 53 behind centre into, imbeds mold prototype model 51.Heat while while pressurizeing, rubber mold 20 is solidified as cuboid (box) shape from above-below direction when further packing from the upper side silicon rubber 53 into.Make rubber mold 20 be separated into upside rubber mold 20a and downside rubber mold 20b in centre by divisional plane 20d, mold prototype model 51 is taken out.When by divisional plane 20d corrugated while separating, rubber mold 20 can separate to zero deflection joint.Complete the rubber mold 20 of the hollow pattern 20c that is formed with mold prototype model 51 in inside.In shaping investment pattern operation subsequently, for inside to hollow pattern 20c imports wax, in rubber mold 20, dispose the wax inlet 23 of penetrating the taper that wax nozzle can be chimeric suitably.

In the shaping investment pattern operation after rubber mold forming process (the II portion of Fig. 5) immediately, use and penetrate the following wax that injects of wax apparatus 24.In order to manufacture the mo(u)lding of high-quality, injecting to inside when wax, importantly inject wax to the inside of the hollow pattern 20c in rubber mold 20 with high density.Therefore, first, so that the wax inlet 23 of rubber mold 20 loads the rubber mold platform 35 on grip device 30 with the mode that wax nozzle 34 closely engages of penetrating of penetrating wax apparatus 24 by rubber mold 20.The platen of grip device 30 (pressing plate) 33 is pressed down, apply face to rubber mold 20 and press (hereinafter referred to as chucking pressure).Then, make penetrating the wax that melts in the stove of wax apparatus 24 via penetrating wax nozzle 34 and wax inlet 23 is injected in hollow pattern 20c.In the time injecting, exert pressure to the inside of the hollow pattern 20c in rubber mold 20, prevent that wax from shrinking when cooling.

Summary of the invention

the problem that invention will solve

Because the inside of the hollow pattern 20c in rubber mold 20 has applied pressure, therefore, while injecting wax in the inside to hollow pattern 20c with high density, how to give equably by the platen 33 of fixture 30 " chucking pressure " of rubber mold 20 become to problem.Inhomogeneous pressure give the local defect that can cause goods.

Press equably rubber mold 20 aspect, the central portion of the rubber mold 20 when preferably the center of pressing is set in rubber mold 20 horizontal positioned.But the size of rubber mold 20 is according to the difference of cast product and difference is not the same.Therefore, to change press section be difficult to corresponding various rubber mold 20.

In addition, allow to change press section, making platen decline equably in vertical in this position is also difficult.If cannot make platen decline equably, it is difficult pressing equably rubber mold 20.

for the scheme of dealing with problems

The object of the present application is independently to provide grip device with the size of rubber mold 20.

Another object of the present application is, the grip device that is attached to wax-pattern device for injection moulding is provided, and this grip device is characterised in that to have: mould table, and it has the plane for loading mould; Chuck, it can move in vertical with respect to this mould table; The 1st guidance unit, the moving direction of itself and this chuck extends abreast; And pressing component, it can engage with above-mentioned the 1st guide member and move along above-mentioned the 1st guidance unit, above-mentioned pressing component have with above-mentioned plane parallel the 2nd guidance unit that configures, above-mentioned chuck can move along above-mentioned the 2nd guidance unit.

invention effect

According to the present invention, can press equably rubber mold 20.

Accompanying drawing explanation

Fig. 1 is the side view of grip device of the present invention.

Fig. 2 is the figure watching from the arrow X of Fig. 1, is the front view of grip device of the present invention.

Fig. 3 is the figure of a state after chuck of the present invention is moved.

Fig. 4 is the figure that makes other state after chuck of the present invention moves.

Fig. 5 is the indicative flowchart of lost-wax process.

The specific embodiment

See figures.1.and.2 to illustrate grip device 1.Fig. 1 and Fig. 2 are the figure that grip device 1 of the present invention is shown.Grip device 1 is attached to wax-pattern device for injection moulding 24, in the time that rubber mold 20 is loaded in grip device 1, with to penetrate wax apparatus 24 relative, arranges to penetrate the direction mode vertical with the face at wax inlet 23 places of rubber mold 20 that wax nozzle 34 extends.User inserts the front end of penetrating wax nozzle 34 be engaged in the tapering of wax inlet 23 with press mode.Fig. 2 is the figure watching from the direction of arrow X of Fig. 1.Penetrate the direction of arrow X that wax nozzle 34 extends Fig. 1.

Grip device 1 possesses press section 11 and brace table 12.Press section 11 possesses: mould table 5, and it has the plane 5a for loading rubber mold 20; And holding member 2a, 2b.Preferably this plane 5a is approximate

horizontal.Holding member

2a, 2b form two faces of relative fixture, extend in vertical in the mode on the relative limit of clamping die platform 5.

Dispose for example air operated cylinder 13 at the upside of holding member 2a, 2b.The mode that cylinder 13 can move along the normal direction of plane 5a with cylinder axis 4 configures.The normal direction of plane 5a is representational is vertical, and cylinder axis 4 can be to approach or away from the mode lifting of the plane 5a of mould table 5.There is chuck 4a in the front-end configuration of cylinder axis.

On holding

member

2a, 2b, dispose the 1st guidance unit extending abreast with the moving direction of cylinder axis 4.The 1st guidance unit is for example representational is to run through the slotted hole 8 that the mode of holding

member

2a, 2b wears, and the profile of this slotted hole 8 is formed as parallel with the moving direction of cylinder axis 4.In addition, the 1st guidance unit also can be made as the track segment that the mode to extend abreast with the moving direction of cylinder axis 4 configures.

Above mould table 5, dispose as the platen 3 of pressing component with plane 3c.Platen 3 keeps the mode of extending substantially in parallel with plane 5a to configure with plane 3c.Platen 3 has the platen guide pin 7 as projection.The width of platen guide pin 7 is roughly corresponding with the width of the short brink of slotted hole 8.Thereby platen guide pin 7 is inserted slotted hole 8 and is engaged with slotted hole 8.Therefore, platen 3 can move along slotted hole 8 along with platen guide pin 7.That is, platen 3 can move abreast with the moving direction of cylinder axis 4, but cannot be to moving with the angled direction of moving direction tool of cylinder axis 4.

Platen 3 has guiding rail 3a, the 3b as the 2nd guidance unit.The direction that guiding

rail

3a, 3b extend along wax-pattern injection nozzle 34 from wax-pattern device for injection moulding is extended.The diameter of chuck 4a is greater than the diameter of cylinder axis 4.The cross section of guiding

rail

3a, 3b is from the upper surface 3d of platen 3 is edge-on to chuck 4a.The mode that becomes the width larger and less than the diameter of chuck 4a than the diameter of cylinder axis 4 with the width of guiding rail 3a and guiding rail 3b therefrom configures.Thus, guiding

rail

3a, 3b energy clamp gripper 4a, thus make platen 3 and chuck 4a combination.In addition, preferably in chuck 4a, be equipped with groove, guiding

rail

3a, 3b end separately embeds in this groove, thereby makes guiding

rail

3a, 3b clamp gripper 4a.Under the state of platen 3 and chuck 4a combination, platen 3 configures plane 3c is remained with the mode of plane 5a almost parallel.In addition, also can make the parts that platen 3 is hollow, making the 2nd guidance unit is the slotted hole that is arranged in the upper surface of platen 3.Make chuck 4a be placed in the inside of platen 3, cylinder axis 4 extends from slotted hole, thereby makes the 2nd guidance unit clamp gripper 4a and make platen 3 and chuck 4a combination.Now, as long as the direction that slotted hole is extended is the direction that wax-pattern injection nozzle 34 extends.

In press section 11, dispose screw component 15, this screw component 15 extends along the bearing of trend of the injection nozzle 34 of, wax-pattern device for injection moulding 24 parallel with plane 5a.Screw component 15 is supported at 2

support zone

15b, 15c, is held in rotationally clamp member.One end of screw portion disposes nut 15a.In addition, parallel with plane 5a and dispose abreast guide rod 16 with screw component 15.

Cylinder axis 4 connects the bearing cylinder 6 as cylinder block sub-assembly in vertical.In bearing cylinder 6, vertically dispose 2 parallel holes with cylinder axis 4.A side in 2 holes is the through hole that disposes the threaded portion corresponding with the screw portion of screw component 15, and the opposing party is the through hole without threaded portion.Screw component 15 is screwed together in the through hole that disposes threaded portion, and guide rod 16 is inserted and is embedded in the through hole without threaded portion.In the time of the nut 15a of rotary screw parts 15, bearing cylinder 6 can and come and go mobile along the bearing of trend of the injection nozzle 34 of wax-pattern device for injection moulding 24 along screw thread.

Then, illustrate with reference to Fig. 3 and Fig. 4 grip device 1 of the present invention is how to bring into play function.Fig. 3 and Fig. 4 are the figure that the mechanism of the fixture inside of watching from the arrow Y of Fig. 2 is shown.The right side of Fig. 3 is a side that disposes the injection nozzle 34 of wax-pattern device for injection moulding 24.

Fig. 3 illustrates state when less rubber mold 20 is loaded in the mould table 5 of grip device 1.In this case, rubber mold 20 center is near wax-pattern device for injection moulding 24 sides.Therefore, the nut 15a of rotary screw parts 5, thus make injection nozzle 34 side shiftings of bearing cylinder 6 to wax-pattern device for injection moulding 24.Chuck 4a moves along guiding rail 3a, 3b.To chuck 4a be positioned at rubber mold 20 press center time, cylinder 13 is moved, thus make chuck 4a decline.Chuck 4a presses down platen 3, applies suitable pressure to rubber mold 20.

Then, Fig. 4 illustrates state when larger rubber mold 20 is loaded in the mould table 5 of grip device 1.The nut 15a of rotary screw parts 5, thus bearing cylinder 6 is moved to the direction of the injection nozzle 34 away from wax-pattern device for injection moulding 24.Thus, cylinder chuck 4a moves along guiding rail 3a, 3b.To chuck 4a be positioned at rubber mold 20 press center time, cylinder 13 is moved, thus make chuck 4a decline.Chuck 4a presses down platen 3, applies suitable pressure to rubber mold 20.In arbitrary situation in Fig. 3 and Fig. 4, slotted hole 8 is all to wear along the moving direction of chuck 4a with the location-independent of chuck 4a, therefore,, even if chuck 4a, with respect to the position of the injection nozzle 34 of wax-pattern device for injection moulding 24, variation has occurred, the position of platen 3 also can not change., can independently always press in identical position with the size of rubber mold 20.

industrial utilizability

The present application can be applied to the wax-pattern emission forming device fixture for lost-wax casting.

description of reference numerals

1 wax-pattern emission forming device fixture

2a, 2b holding member

3 platens

4 chucks

5 mould table

6 cylinder block sub-assemblies (bearing cylinder).

Claims

1. a grip device,

Be attached to wax-pattern device for injection moulding, it is characterized in that, have:

Mould table, it has the plane for loading mould;

Chuck, it can move in vertical with respect to this mould table;

The 1st guidance unit, the moving direction of itself and this chuck extends abreast; And

Pressing component, it can engage with above-mentioned the 1st guide member and move along above-mentioned the 1st guidance unit,

Above-mentioned pressing component have with above-mentioned plane parallel the 2nd guidance unit that configures,

Above-mentioned chuck can move along above-mentioned the 2nd guidance unit.

2. grip device according to claim 1, is characterized in that,

Above-mentioned the 2nd guidance unit is along the bearing of trend configuration of the injection nozzle of above-mentioned wax-pattern device for injection moulding.

3. grip device according to claim 1, is characterized in that,

Above-mentioned grip device comprises screw component,

Above-mentioned screw component and above-mentioned plane parallel ground extend along the bearing of trend of the injection nozzle of above-mentioned wax-pattern device for injection moulding, are held in clamp member and rotatable with 2 positions,

Above-mentioned cylinder block sub-assembly is screwed together in the screw portion of above-mentioned screw component,

Above-mentioned chuck connects above-mentioned cylinder block sub-assembly, can make above-mentioned chuck move along above-mentioned the 2nd guidance unit by rotating above-mentioned screw component.

4. grip device according to claim 1, is characterized in that,

Above-mentioned the 1st guidance unit is the slotted hole that is arranged in the parts that keep above-mentioned pressing component, and above-mentioned pressing component has the projection engaging with above-mentioned slotted hole.

5. grip device according to claim 1, is characterized in that,

Above-mentioned the 2nd guidance unit clamps above-mentioned chuck, thereby above-mentioned pressing component is combined with this chuck.